@media screen and (max-width: 767px) {
  .container {
    width: 100%;
  }
}
@media screen and (min-width: 768px) {
  .container {
    width: 850px ;
  }
}
@media screen and (min-width: 992px) {
  .container {
    width: 970px ;
  }
}
@media screen and (min-width: 1200px) {
  .container {
    width: 1170px ;
  }
}
h1 {
  text-align: center;
  margin-top: 5%;
}
.row {
  margin-top: 8%;
}
.btno {
  margin-top: 8%;
  width: 100%;
  height: 20%;
  color: #fdfdfd;
  padding: 8%;
  background-color: #15777b;
}
